CN114282232A - Vehicle communication key management method and device, storage medium and equipment - Google Patents
Vehicle communication key management method and device, storage medium and equipment Download PDFInfo
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Abstract
The invention discloses a management method, a management device, a storage medium and equipment of a vehicle communication key, relates to the field of vehicle control, and mainly aims to solve the problems of redundant steps and low safety in the key transmission process. The method comprises the following steps: configuring a first key operator for each controller of the vehicle when the vehicle is off-line; in the case of a distribution operator for the controller, the controller is subjected to a distribution operator based on a second key operator, wherein the communication key of the vehicle is determined jointly based on the first key operator and the second key operator. The invention is used for vehicle control process.
Description
Technical Field
The present invention relates to the field of vehicle control, and in particular, to a method, an apparatus, a storage medium, and a device for managing a vehicle communication key.
Background
With the rapid development of electronic information technology, technologies such as intelligent internet, automatic driving, C2x, and 5G are applied to vehicles like bamboo shoots in the spring after rain, and in order to prevent information from being tampered and leaked, and thus the vehicles are controlled illegally and user information is leaked, signals on an in-vehicle network are encrypted, authenticated, and the like by a plurality of vehicle enterprises. In encryption and authentication, a key is the most critical factor. In-vehicle communication needs to consider real-time performance of communication, so a large number of symmetric encryption algorithms are adopted, in key management of the symmetric key algorithms, key distribution is a weak link, and the possible mode of the existing key distribution is as follows: a selects a key and physically passes it to B, a third party selects a key and physically passes it to a and B, if a and B have previously or recently used a key, one party may send the new key to the other party with the old key, and if a and B have an encrypted connection to third party C, C may send the key A, B over the encrypted connection. Such a distribution has a drawback that once an attacker obtains a key, all subsequent keys are no longer secure.
Disclosure of Invention
In view of the above problems, the present invention provides a method, an apparatus, a storage medium, and a device for managing a vehicle communication key, and mainly aims to solve the problems of redundant steps and low security during key transmission.
In order to solve the above technical problem, in a first aspect, the present invention provides a method for managing a vehicle communication key, the method including:
configuring a first key operator for each controller of the vehicle when the vehicle is off-line;
and in the case of distributing an operator to the controller, distributing the operator to the controller based on a second key operator, wherein the communication key of the vehicle is determined based on the first key operator and the second key operator.
Optionally, the method further includes:
and generating the communication key based on the first key operator and the second key operator.
Optionally, the generating the communication key based on the first key operator and the second key operator includes:
and generating the communication key by a pseudo-random algorithm based on the first key operator and the second key operator.
Optionally, the method further includes:
configuring target parameters for each controller of the vehicle when the vehicle is off-line.
Optionally, the generating the communication key through a pseudo-random algorithm based on the first key operator and the second key operator includes:
and generating the communication key by a pseudo-random algorithm based on the first key operator, the second key operator and the target parameter.
Optionally, the generating the communication key through a pseudo-random algorithm based on the first key operator, the second key operator, and the target parameter includes:
generating a plurality of communication key units by a pseudo-random algorithm based on the first key operator, the second key operator and the target parameter;
and determining the communication key based on the plurality of communication key units.
Optionally, the generating a plurality of communication key units by a pseudo-random algorithm based on the first key operator, the second key operator, and the target parameter includes:
and sequentially generating a plurality of communication key units by a pseudorandom algorithm based on the first key operator, the second key operator and the target parameter, wherein the target parameter corresponding to the next key unit comprises the previous key unit.
In a second aspect, an embodiment of the present invention further provides a device for managing a vehicle communication key, including:
a configuration unit configured to configure a first key operator for each controller of the vehicle when the vehicle is off-line;
and a distribution unit configured to distribute an operator to the controller based on a second key operator when the operator is distributed to the controller, wherein the communication key of the vehicle is determined based on both the first key operator and the second key operator.
In order to achieve the above object, according to a third aspect of the present invention, there is provided a storage medium including a stored program, wherein the above-described management method of the vehicle communication key is implemented when the program is executed by a processor.
In order to achieve the above object, according to a fourth aspect of the present invention, there is provided an electronic device comprising at least one processor, and at least one memory connected to the processor; the processor is used for calling the program instructions in the memory and executing the vehicle communication key management method.
By means of the technical scheme, the vehicle communication key management method, the vehicle communication key management device, the vehicle communication key management storage medium and the vehicle communication key management equipment provided by the invention have the advantages that for the problems of redundant steps and low safety in the key transmission process in the existing vehicle communication key management process, a first key operator is configured for each controller of the vehicle when the vehicle is off-line; and in the case of distributing an operator to the controller, distributing the operator to the controller based on a second key operator, wherein the communication key of the vehicle is determined based on the first key operator and the second key operator. In the scheme, due to the combination which is changeable, operators can be completely and directly transmitted in a plaintext under the condition that the safety of the transmission process is not reduced, so that the transmission process is simpler and more flexible and is easy to expand, and meanwhile, the algorithm of the scheme is more suitable for a scene of distributing keys in a one-to-many mode in a vehicle-mounted environment.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
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Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 is a flow chart illustrating a method for managing vehicle communication keys according to an embodiment of the present invention;
FIG. 2 is a diagram illustrating a process for generating a vehicle communication key according to an embodiment of the present invention;
FIG. 3 is a process diagram illustrating a sequence of generating a vehicle communication key according to an embodiment of the present invention;
fig. 4 is a block diagram showing a vehicle communication key management apparatus according to an embodiment of the present invention;
fig. 5 shows a block diagram of a management device for a vehicle communication key according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
In order to solve the problem of large manpower consumption in the current vehicle communication key management process, an embodiment of the present invention provides a vehicle communication key management method, as shown in fig. 1, the method includes:
101. configuring a first key operator for each controller of the vehicle when the vehicle is off-line.
Illustratively, the vehicle is off-line in the sense that the automobile is put on the market after being designed, manufactured and tested. In the automobile engineering, the controller is a sub-controller controlled by an electronic control unit ecu (electronic control unit) for controlling an electric system of a vehicle body, and the sub-controller can be a vehicle control unit VCU, a hybrid power controller HCU, an automatic transmission controller TCU and the like. The key operator refers to parameters input in an algorithm for converting a plaintext into a ciphertext or converting the ciphertext into the plaintext, and is used for preventing information from being transmitted mistakenly or divulging a secret when information is transmitted between the master controller and the sub-controllers or information is transmitted between the sub-controllers. When the vehicle is configured to be put on the market, the first key operator is configured in advance for each controller of the vehicle.
102. And in the case of distributing an operator to the controller, distributing the operator to the controller based on a second key operator, wherein the communication key of the vehicle is determined based on the first key operator and the second key operator.
Illustratively, when distributing the operator, only the second key operator needs to be distributed to the controller.
By means of the technical scheme, the vehicle communication key management method provided by the invention has the advantages that for the problems of redundant steps and low safety in the key transmission process in the existing vehicle communication key management process, a first key operator is configured for each controller of the vehicle when the vehicle is off-line; and in the case of distributing an operator to the controller, distributing the operator to the controller based on a second key operator, wherein the communication key of the vehicle is determined based on the first key operator and the second key operator. In the scheme, due to the combination which is changeable, operators can be completely and directly transmitted in a plaintext under the condition that the safety of the transmission process is not reduced, so that the transmission process is simpler and more flexible and is easy to expand, and meanwhile, the algorithm of the scheme is more suitable for a scene of distributing keys in a one-to-many mode in a vehicle-mounted environment.
In one embodiment, the method further comprises:
and generating the communication key based on the first key operator and the second key operator.
Illustratively, the first key operator and the second key operator collectively determine a communication key of the vehicle. And configuring a first key operator for the vehicle to jointly determine the communication key of the vehicle by combining the received second key operator with the vehicle off-line.
In one embodiment, the generating the communication key based on the first key operator and the second key operator includes:
and generating the communication key by a pseudo-random algorithm based on the first key operator and the second key operator.
By way of example, common pseudo-random algorithms may be hash algorithms, encryption algorithms, signature algorithms. The above hash algorithm maps a binary string of any length to a binary string of a fixed length, and the mapping rule is the hash algorithm. The encryption algorithm includes many kinds, and may be a symmetric algorithm, an international data encryption algorithm, an RSA algorithm, an asymmetric algorithm, and the like. The signature algorithm is a digital signature algorithm, and is an alphanumeric string which is obtained by processing information to be transmitted through a one-way function and used for authenticating the information source and verifying whether the information changes in the transmission process.
And configuring a first key operator for the vehicle based on the received second key operator when the vehicle is offline, and determining the communication key of the vehicle by the second key operator and the vehicle through the at least one pseudo-random algorithm.
In one embodiment, the method further comprises:
configuring target parameters for each controller of the vehicle when the vehicle is off-line.
For example, the key generation needs not only the first key operator and the second key operator, but also the target parameter, which is another parameter different from the first key operator and the second key operator, where the target parameter is configured in advance for each controller of the vehicle when the vehicle is placed on the market, as with the first key operator.
In an embodiment, the generating the communication key by a pseudo-random algorithm based on the first key operator and the second key operator includes:
and generating the communication key by a pseudo-random algorithm based on the first key operator, the second key operator and the target parameter.
For example, the communication key needs to be generated by the pseudo-random algorithm in combination with the first key operator, the second key operator, and the target parameter.
In one embodiment, the generating the communication key by a pseudo-random algorithm based on the first key operator, the second key operator and the target parameter includes:
generating a plurality of communication key units by a pseudo-random algorithm based on the first key operator, the second key operator and the target parameter;
and determining the communication key based on the plurality of communication key units.
Illustratively, the communication key is determined by a plurality of communication key units together, and the determination mode can be binary concatenation, modulo two operation, and the like.
In one embodiment, the generating a plurality of communication key units by a pseudo-random algorithm based on the first key operator, the second key operator and the target parameter includes:
and sequentially generating a plurality of communication key units by a pseudorandom algorithm based on the first key operator, the second key operator and the target parameter, wherein the target parameter corresponding to the next key unit comprises the previous key unit.
For example, the communication key unit a is obtained by freely combining and mapping the first key operator, the second key operator, and the target parameter by the at least one pseudorandom algorithm, the communication key unit B is obtained by the first key operator, the second key operator, the target parameter, and the communication key unit a, the communication key unit C is obtained by the first key operator, the second key operator, the target parameter, and the communication key unit B, and the communication key is determined by different modes such as binary concatenation and modulo binary arithmetic based on the obtained communication key unit a, communication key unit B, and communication key unit C.
Further, the embodiment of the invention also provides a generation process diagram of the vehicle communication key, as shown in fig. 2. In the figure, the parameter 1, the parameter 2, and the parameter 3 are the target parameters, the key (1), the key (2), and the key (n) are the communication key units, the key is the communication key, and i ═ 1 is i1Unit, where i-2 is i2Unit, where i-n is inAnd (4) units.
i1The unit generates the key (1), i) by a pseudo-random algorithm based on the first key operator, the second key operator, the parameter 1 and the parameter 22The unit generates the key (2, i) by a pseudo-random algorithm based on the first key operator, the second key operator, the parameter 1 and the parameter 2nThe unit generates the key (n) by a pseudo random algorithm based on the first key operator, the second key operator, the parameter 1, and the parameter 2, and determines the key based on the key (1), the key (2), and the … … key (n). Illustratively, the key is determined by key (1) and key (2) … … key (n), and the determination mode can be binary concatenation, modulo two operation, and the like.
Further, the embodiment of the invention also provides a process diagram of a vehicle communication key generation sequence, as shown in fig. 3. In the figure, the parameter 1, the parameter 2, and the parameter 3 are the target parameters, the key (1), the key (2), and the key (n) are the communication key units, the key is the communication key, and i ═ 1 is i1Unit, where i-2 is i2Unit, where i-n is inAnd (4) units.
i1The unit generates the key (1), i) by a pseudo-random algorithm based on the first key operator, the second key operator, the parameter 1 and the parameter 22The unit generates the key (2), i, by a pseudo-random algorithm based on the first key operator, the second key operator, key (1), and parameters 1 and 2nThe unit generates the key (n) by a pseudo-random algorithm based on the first key operator, the second key operator, the key (n-1), the parameter 1, and the parameter 2, and determines the key based on the key (1) and the key (2) … … key (n). Illustratively, the key is determined by key (1) and key (2) … … key (n), and the determination mode can be binary concatenation, modulo two operation, and the like.
Further, as an implementation of the method shown in fig. 1, an embodiment of the present invention further provides a vehicle communication key management apparatus, which is used for implementing the method shown in fig. 1. The embodiment of the apparatus corresponds to the embodiment of the method, and for convenience of reading, details in the embodiment of the apparatus are not repeated one by one, but it should be clear that the apparatus in the embodiment can correspondingly implement all the contents in the embodiment of the method. As shown in fig. 4, the apparatus includes: a configuration unit 21, a distribution unit 22, wherein
A configuration unit 21 configured to configure a first key operator for each controller of the vehicle when the vehicle is off-line;
a distribution unit 22, configured to distribute an operator to the controller based on a second key operator when the operator is distributed to the controller, where the communication key of the vehicle is determined based on the first key operator and the second key operator.
Illustratively, the method further comprises:
and generating the communication key based on the first key operator and the second key operator.
For example, the generating the communication key based on the first key operator and the second key operator includes:
and generating the communication key by a pseudo-random algorithm based on the first key operator and the second key operator.
Illustratively, the method further comprises:
configuring target parameters for each controller of the vehicle when the vehicle is off-line.
Illustratively, the generating the communication key by a pseudo-random algorithm based on the first key operator and the second key operator includes:
and generating the communication key by a pseudo-random algorithm based on the first key operator, the second key operator and the target parameter.
Illustratively, the generating the communication key by a pseudo-random algorithm based on the first key operator, the second key operator and the target parameter includes:
generating a plurality of communication key units by a pseudo-random algorithm based on the first key operator, the second key operator and the target parameter;
and determining the communication key based on the plurality of communication key units.
Illustratively, the generating a plurality of communication key units by a pseudo-random algorithm based on the first key operator, the second key operator and the target parameter includes:
and sequentially generating a plurality of communication key units by a pseudorandom algorithm based on the first key operator, the second key operator and the target parameter, wherein the target parameter corresponding to the next key unit comprises the previous key unit.
By means of the technical scheme, the vehicle communication key management device provided by the invention has the advantages that for the problems of redundant steps and low safety in the key transmission process in the existing vehicle communication key management process, a first key operator is configured for each controller of the vehicle when the vehicle is off-line; and in the case of distributing an operator to the controller, distributing the operator to the controller based on a second key operator, wherein the communication key of the vehicle is determined based on the first key operator and the second key operator. In the scheme, due to the combination which is changeable, operators can be completely and directly transmitted in a plaintext under the condition that the safety of the transmission process is not reduced, so that the transmission process is simpler and more flexible and is easy to expand, and meanwhile, the algorithm of the scheme is more suitable for a scene of one-to-many key distribution in a vehicle-mounted environment.
The processor comprises a kernel, and the kernel calls the corresponding program unit from the memory. One or more kernels can be set, the management method of the vehicle communication secret key is realized by adjusting kernel parameters, and the problems of redundant steps and low safety in the secret key transmission process can be solved.
An embodiment of the present invention provides a storage medium including a stored program that, when executed by a processor, implements the method for managing a vehicle communication key.
The embodiment of the invention provides a processor, which is used for running a program, wherein the management method of the vehicle communication key is executed when the program runs.
The embodiment of the invention provides equipment, which comprises at least one processor and at least one memory connected with the processor; the processor is used for calling the program instructions in the memory and executing the vehicle communication key management method
An embodiment of the present invention provides a device 30, as shown in fig. 5, the device includes at least one processor 301, at least one memory 302 connected to the processor, and a bus 303; wherein, the processor 301 and the memory 302 complete the communication with each other through the bus 303; the processor 301 is configured to call program instructions in the memory to perform the above-described method for managing a vehicle communication key.
The smart device herein may be a PC, PAD, mobile phone, etc.
The present application further provides a computer program product adapted to perform a program for initializing the following method steps when executed on a flow management device: configuring a first key operator for each controller of the vehicle when the vehicle is off-line; and in the case of distributing an operator to the controller, distributing the operator to the controller based on a second key operator, wherein the communication key of the vehicle is determined based on the first key operator and the second key operator.
Further, the method further comprises:
and generating the communication key based on the first key operator and the second key operator.
Further, the generating the communication key based on the first key operator and the second key operator includes:
and generating the communication key by a pseudo-random algorithm based on the first key operator and the second key operator.
Further, the method further comprises:
configuring target parameters for each controller of the vehicle when the vehicle is off-line.
Further, the generating the communication key by a pseudo-random algorithm based on the first key operator and the second key operator includes:
and generating the communication key by a pseudo-random algorithm based on the first key operator, the second key operator and the target parameter.
Further, the generating the communication key by a pseudo random algorithm based on the first key operator, the second key operator, and the target parameter includes:
generating a plurality of communication key units by a pseudo-random algorithm based on the first key operator, the second key operator and the target parameter;
and determining the communication key based on the plurality of communication key units.
Further, the generating a plurality of communication key units by a pseudo random algorithm based on the first key operator, the second key operator, and the target parameter includes:
and sequentially generating a plurality of communication key units by a pseudorandom algorithm based on the first key operator, the second key operator and the target parameter, wherein the target parameter corresponding to the next key unit comprises the previous key unit.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable flow management apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable flow management apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In a typical configuration, a device includes one or more processors (CPUs), memory, and a bus. The device may also include input/output interfaces, network interfaces, and the like.
The memory may include volatile memory in a computer readable medium, Random Access Memory (RAM) and/or nonvolatile memory such as Read Only Memory (ROM) or flash memory (flash RAM), and the memory includes at least one memory chip. The memory is an example of a computer-readable medium.
Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (10)
1. A method for managing a vehicle communication key, comprising:
configuring a first key operator for each controller of the vehicle when the vehicle is off-line;
in the case of a distribution operator for the controller, the controller is subjected to a distribution operator based on a second key operator, wherein the communication key of the vehicle is determined jointly based on the first key operator and the second key operator.
2. The method of claim 1, further comprising:
generating the communication key based on the first key operator and the second key operator.
3. The method of claim 2, wherein generating the communication key based on the first key operator and the second key operator comprises:
generating the communication key by a pseudorandom algorithm based on the first key operator and the second key operator.
4. The method of claim 3, further comprising:
off-line of the vehicle is configuring target parameters for respective controllers of the vehicle.
5. The method of claim 4, wherein generating the communication key based on the first key operator and the second key operator via a pseudo-random algorithm comprises:
generating the communication key by a pseudorandom algorithm based on the first key operator, the second key operator, and the target parameter.
6. The method of claim 5, wherein generating the communication key by a pseudo-random algorithm based on the first key operator, the second key operator, and the target parameter comprises:
generating a plurality of communication key units by a pseudorandom algorithm based on the first key operator, the second key operator, and the target parameter;
determining the communication key based on the plurality of communication key units.
7. The method of claim 6, wherein generating a plurality of communication key units by a pseudo-random algorithm based on the first key operator, the second key operator, and the target parameter comprises:
and sequentially generating a plurality of communication key units by a pseudorandom algorithm based on the first key operator, the second key operator and the target parameter, wherein the target parameter corresponding to the latter key unit comprises the former key unit.
8. A management apparatus for a vehicle communication key, characterized by comprising:
the configuration unit is used for configuring a first key operator for each controller of the vehicle when the vehicle is off-line;
a distribution unit configured to distribute an operator to the controller based on a second key operator when the operator is distributed to the controller, wherein the communication key of the vehicle is determined based on the first key operator and the second key operator in common.
9. A storage medium characterized by comprising a stored program, wherein the program realizes the vehicle communication key management method according to any one of claim 1 to claim 7 when executed by a processor.
10. An apparatus comprising at least one processor, and at least one memory coupled to the processor; wherein the processor is configured to call the program instructions in the memory to execute the method for managing a vehicle communication key according to any one of claims 1 to 7.
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